CN2418540Y

CN2418540Y - Square solid-geometry teaching aid

Info

Publication number: CN2418540Y
Application number: CN 00210000
Authority: CN
Inventors: 许中兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-28
Filing date: 2000-04-28
Publication date: 2001-02-07
Anticipated expiration: 2010-04-28

Abstract

The utility model relates to a solid-geometry teaching aid. Six square panels are connected and form a cubic structure, fixing holes are arranged on the surfaces, the edges, and the vertexes, and flexible lines are installed on the fixing holes through fixing pieces. The utility model takes the cubic structure as the skeleton, and beginners can quickly form space concepts and the ability of identifying figures through various relative solid geometry figures which are composed of imaginary planes that are magically formed by the flexible lines, fixed hooks, small fixing holes, lines that are drawn on the surfaces of the cubic structure, and crossed straight lines, so that other polyhedral types of subjects can be easily solved.

Description

Square solid geometry teaching aid

The utility model relates to the manufacturing of solid geometry teaching aid.

Middle school student regard solid as plane at first very habitually entering solid geometry study during the stage, are difficult to enter normal learning state, establish the notion in space as early as possible, develop normal space imagination and understandability.

The purpose of this utility model is to provide a kind of new square solid geometry teaching aid, and it can make the student establish the notion in space as early as possible, overcomes the difficulty of study solid geometry.

The utility model comprises that mainly transparent panel, flexible wires, fixture and fixed orifice constitute.

The utility model is described with reference to the accompanying drawings as follows:

Fig. 1 is square solid geometry teaching aid overall schematic.

Fig. 2 is square solid geometry teaching aid embodiment 1 synoptic diagram

Fig. 3 is that square solid geometry teaching aid example is executed 2 synoptic diagram.

As shown in the figure, the 1st, panel, the 2nd, gentle line, available bungee is made, the 3rd, fixture, can be collude, ball, handful or small circle ring, be installed in the flexible wires end points; The 4th, fixed orifice; Panel 1 is transparent square thin plate, useable glass, organic glass or plastics make, bond together with cementing agent (transparent adhesive tape), six thin plates constitute transparent square, on each face, rib and the summit circular hole is set, an above circular hole can be set on face, the rib, and the circular hole on face, the rib can just in time be arranged on face, rib medium position, and flexible wires 2 (one or more) is fixed on the fixed orifice 4.

For the solid geometry beginner, the key of learning well is to set up as early as possible the sense of product body.And polyhedron and rotary body all are the solid geometry figures that fixed space is arranged.As long as the scholar has set up stronger stereoscopic sensation and reached concept of space clearly, just can have stronger knowledge figure ability to the solid geometry figure that is drawn on the plane.

Therefore, the utility model square is a skeleton, by flexible wires, fixed hook, fixing aperture and be drawn in line on the square dignity, and the empty face of the unreal one-tenth of intersecting straight lines constitutes various relevant solid geometry figures, can make the beginner set up concept of space and knowledge figure ability very soon, and then can more easily solve other polyhedral type topic.

Fig. 2 implements example 1, wherein mainly contains two flexible wires, 4 fixed hooks, and 4 apertures are formed.The meaning of the question is: square ABCD-A ₁B ₁C ₁D ₁In, solve (1) AC ₁⊥ B ₁D ₁, (, 2) and AC ₁⊥ section CB ₁D ₁

Fig. 3 is the exercise demonstration graph, wherein mainly contains a flexible wires, 2 fixed hooks, and 2 apertures constitute.The meaning of the question is: M, N are respectively square ABCD-A ₁B ₁C ₁D ₁Diagonal line AB on the face, B ₁D ₁On point, and A ₁M= ₁/ 3A ₁B, B ₁N=1/3B ₁D ₁, solving MN is different surface beeline A ₁B and B ₁D ₁Common vertical line.

Claims

1. square solid geometry teaching aid, it is characterized in that it comprises that panel (1), flexible wires (2), fixture (3) and fixed orifice (4) constitute, said panel (1) is transparent square, six square panels (1) connect and compose cube structure, on the face of square and on rib and the summit fixed orifice (4) is being set, flexible wires (2) is installed on the fixed orifice (4) by fixture (3).

2. according to the said square solid geometry teaching aid of claim 1, it is characterized in that said flexible wires (2) installs one at least.

3. according to the said square solid geometry teaching aid of claim 1, it is characterized in that said fixed body (3) be collude, ball, rod or ring.

4. according to the said square solid geometry teaching aid of claim 1, it is characterized in that being provided with fixed orifice (4) in the middle part of panel and rib.